Enanthem
Enanthem or enanthema is a rash on the mucous membranes. It is characteristic of patients with viral infections causing hand foot and mouth disease, measles, and sometimes chicken pox, or COVID-19. In addition, bacterial infections such as scarlet fever may also be a cause of enanthema. The aforementioned diseases usually present with exanthema and enanthema.
Enanthema can also indicate hypersensitivity.